Ds. Jones et Nj. Medlicott, CASTING SOLVENT CONTROLLED-RELEASE OF CHLORHEXIDINE FROM ETHYLCELLULOSE FILMS PREPARED BY SOLVENT EVAPORATION, International journal of pharmaceutics, 114(2), 1995, pp. 257-261
Chlorhexidine release from ethylcellulose films east from solvents of
different dichloromethane/ethanol compositions was studied. Release ra
te was proportional to the square root of time. Increased ethanol cont
ent within the casting solvent significantly enhanced release rate. Re
lease rate and cumulative mass released at different time periods (5,
10, 15 and 25 days) were proportional to the solubility parameter of t
he casting solvent.